Subtract 21/7 from 1/84
1st number: 1/84, 2nd number: 3 0/7
1/84 - 21/7 is -251/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
1/84 = 1 × 1/84 × 1 = 1/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
21/7 = 21 × 12/7 × 12 = 252/84 - Subtract the two like fractions:
1/84 - 252/84 = 1 - 252/84 = -251/84
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